:root{
  --bg:#070c12;
  --bg2:#0a1119;
  --card:#0e1722;
  --line:#1b2836;
  --text:#e6eef7;
  --muted:#7f92a6;
  --accent:#2ee59d;
  --accent2:#31b6ff;
  --danger:#ff5c72;
  --warn:#ffbf4d;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 600px at 70% -10%,rgba(49,182,255,.10),transparent 60%),
             radial-gradient(1000px 500px at 10% 0%,rgba(46,229,157,.08),transparent 55%),
             var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:14px;line-height:1.5;min-height:100vh;
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.mono{font-family:var(--mono)}
.muted{color:var(--muted)}

/* top navigation (frontend) */
.topnav{border-bottom:1px solid var(--line);background:rgba(8,13,20,.7);backdrop-filter:blur(8px);position:sticky;top:0;z-index:10}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:58px}
.brand{font-weight:800;font-size:18px;letter-spacing:.5px}
.brand .dot,.dot{color:var(--accent)}
.nav-links a{margin-left:18px;color:var(--muted);font-weight:600}
.nav-links a:hover{color:var(--text);text-decoration:none}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.card-flush{padding:0;overflow:hidden;border-radius:0 14px 14px 14px}

/* buttons */
.btn{cursor:pointer;border:1px solid var(--line);background:#101c28;color:var(--text);
  padding:9px 15px;border-radius:9px;font-size:13px;font-weight:600;transition:.15s}
.btn:hover{border-color:#2b3d4f;background:#132232}
.btn-primary{background:linear-gradient(135deg,var(--accent),#1fbf83);color:#04140d;border:none}
.btn-primary:hover{filter:brightness(1.08)}
.btn-lg{padding:13px 26px;font-size:15px}
.btn-ghost{background:transparent}
.btn-danger{background:#2a1116;border-color:#4a2029;color:var(--danger)}
.btn-danger:hover{background:#3a1620}
.btn-sm{padding:6px 11px;font-size:12px}

/* chips & badges */
.chip{display:inline-block;padding:2px 9px;border-radius:20px;background:#0d2a20;color:var(--accent);
  font-family:var(--mono);font-size:12px;border:1px solid #164a37}
.badge{display:inline-block;min-width:20px;padding:1px 7px;border-radius:20px;background:#12202e;
  color:var(--muted);font-size:12px;text-align:center}
.tag-on{color:var(--accent)}
.tag-off{color:var(--danger)}

/* tables */
.table-scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--line);font-size:13px;white-space:nowrap}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.6px;background:#0b141d;position:sticky;top:0}
tbody tr:hover{background:#0c1620}
td.mono{font-family:var(--mono);color:#cfe0f0}

/* forms */
input[type=text],input[type=password],input[type=search],textarea,select{
  background:#0a121b;border:1px solid var(--line);color:var(--text);border-radius:9px;
  padding:10px 12px;font-size:14px;width:100%;font-family:inherit}
input:focus,textarea:focus{outline:none;border-color:var(--accent2)}
label{display:block;margin:0 0 6px;color:var(--muted);font-size:13px}

/* admin layout */
.admin{display:flex;min-height:100vh}
.sidebar{width:230px;flex-shrink:0;background:var(--bg2);border-right:1px solid var(--line);
  padding:20px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}
.sidebar .logo{font-weight:800;font-size:17px;padding:6px 10px 20px}
.sidebar nav a{display:flex;align-items:center;gap:10px;padding:11px 13px;border-radius:10px;
  color:var(--muted);font-weight:600;margin-bottom:3px}
.sidebar nav a:hover{background:#101b26;color:var(--text);text-decoration:none}
.sidebar nav a.active{background:linear-gradient(135deg,rgba(46,229,157,.16),rgba(49,182,255,.10));
  color:var(--text);border:1px solid #1c3a30}
.sidebar .spacer{flex:1}
.sidebar .who{padding:12px 13px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
.content{flex:1;padding:26px 30px;min-width:0}
.page-title{font-size:22px;font-weight:700;margin:0 0 4px}
.page-sub{color:var(--muted);margin:0 0 22px}

/* stat cards */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-bottom:22px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;position:relative;overflow:hidden}
.stat::after{content:"";position:absolute;right:-20px;top:-20px;width:90px;height:90px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,229,157,.14),transparent 70%)}
.stat .n{font-size:30px;font-weight:800;font-family:var(--mono)}
.stat .l{color:var(--muted);font-size:13px;margin-top:2px}
.stat.a2 .n{color:var(--accent2)}
.stat.a1 .n{color:var(--accent)}

.grid2{display:grid;grid-template-columns:1.6fr 1fr;gap:18px}
@media(max-width:860px){.grid2{grid-template-columns:1fr}}

.section-h{display:flex;align-items:center;justify-content:space-between;margin:0 0 12px}
.section-h h3{margin:0;font-size:15px}

.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.toolbar .grow{flex:1;min-width:180px}

.pager{display:flex;gap:8px;align-items:center;justify-content:flex-end;margin-top:16px;color:var(--muted)}

.alert{padding:11px 14px;border-radius:10px;margin-bottom:16px;font-size:14px}
.alert-ok{background:#0d2a20;border:1px solid #164a37;color:var(--accent)}
.alert-err{background:#2a1116;border:1px solid #4a2029;color:var(--danger)}

.kv{display:grid;grid-template-columns:130px 1fr;gap:10px 16px;font-size:14px}
.kv .k{color:var(--muted)}

@media(max-width:760px){
  .sidebar{position:fixed;left:-240px;transition:.2s;z-index:30}
  .content{padding:18px}
}